ci: install tinytex and cache qpdf installation

Refs #53
2 jobs for 53-ci-dependency-issues-with-latex-in-check-as-cran in 3 minutes and 57 seconds (queued for 8 seconds)
latest
Status Name Job ID Coverage
  Checks
failed check_as_cran #186353
docker

00:03:55

failed check_not_cran #186352
docker

00:03:57

 
Name Stage Failure
failed
check_not_cran Checks
** testing if installed package can be loaded from final location
** testing if installed package keeps a record of temporary installation path
* DONE (airGR)
>
>
$ if [[ $NOT_CRAN == "false" ]]; then R -e 'pacman::p_load("tinytex", "qpdf")' && R -e 'tinytex::install_tinytex()'
/usr/bin/bash: eval: line 141: syntax error: unexpected end of file
Cleaning up file based variables
ERROR: Job failed: exit code 2
failed
check_as_cran Checks
** testing if installed package can be loaded from final location
** testing if installed package keeps a record of temporary installation path
* DONE (airGR)
>
>
$ if [[ $NOT_CRAN == "false" ]]; then R -e 'pacman::p_load("tinytex", "qpdf")' && R -e 'tinytex::install_tinytex()'
/usr/bin/bash: eval: line 141: syntax error: unexpected end of file
Cleaning up file based variables
ERROR: Job failed: exit code 2